Hybrid Transmission Schemes for Grouped Users in Cellular Systems

Awad, J. F., Imran, M. A. and Tafazolli, R. (2012) Hybrid Transmission Schemes for Grouped Users in Cellular Systems. In: 2012 8th International Wireless Communications and Mobile Computing Conference (IWCMC), Limassol, Cyprus, 27-31 Aug 2012, pp. 561-566. ISBN 9781457713798 (doi: 10.1109/IWCMC.2012.6314265)

Abstract

Hybrid systems, where more than one transmission scheme are used within the same cluster, can be used as a way to improve spectral efficiency for the system as a whole and, more importantly, for the cell-edge users. In this paper, we will propose frequency reuse method by grouping the users into two groups, critical and non-critical users. Each user group is served with a transmission scheme, where the most vulnerable users are served by transmission scheme that avoid, make use of, and orthogo-nalise the interference. These schemes include the cooperative maximal ratio transmission and the non-cooperative orthogonal and non-orthogonal schemes. Radio resource allocation is studied and a solution is given for maximal ratio transmission and interference alignment. Simulation results are given, and showing the performance of each scheme when all users are considered critical and one scheme is used. Moreover, results showing the performance of our proposed frequency reuse scheme where different percentage of users considered critical.

• Item Type: Conference Proceedings
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Imran, Professor Muhammad
• Authors: Awad, J. F., Imran, M. A., and Tafazolli, R.
• College/School: College of Science and Engineering > School of Engineering
• ISSN: 2376-6492
• ISBN: 9781457713798
• Published Online: 27 September 2012
• Copyright Holders: Copyright © 2012 IEEE
• First Published: First published in 2012 8th International Wireless Communications and Mobile Computing Conference (IWCMC): 561-566
• Publisher Policy: Reproduced in accordance with the publisher copyright policy